Title :
Performance analysis of the decorrelating multiuser detector for nonlinear amplified DS-CDMA signals
Author :
Rugini, L. ; Banelli, P. ; Cacopardi, S.
Author_Institution :
Perugia Univ., Italy
Abstract :
This paper analyses the effects of nonlinear distortions introduced by high-power amplifiers (HPAs) on the performance of the linear decorrelating multiuser detector (MUD) in synchronous direct-sequence code-division multiple-access (DS-CDMA) systems. By assuming and motivating the Gaussian distribution of the nonlinear distortion noise, the system bit-error rate (BER) has been derived theoretically in additive white Gaussian noise (AWGN) and frequency-flat Rayleigh fading channels. Simulation results are provided in order to validate the theoretical analysis for ideally predistorted amplifiers.
Keywords :
AWGN channels; Gaussian distribution; Rayleigh channels; code division multiple access; decorrelation; error statistics; multiuser channels; nonlinear distortion; power amplifiers; radio receivers; signal detection; spread spectrum communication; BER; Gaussian distribution; HPAs; MUD; additive white Gaussian noise channels; bit-error rate; frequency-flat Rayleigh fading channels; high-power amplifiers; ideally predistorted amplifiers; linear decorrelating multiuser detector; nonlinear amplified DS-CDMA signals; nonlinear distortion noise; nonlinear distortions; performance analysis; synchronous direct-sequence code-division multiple access systems; AWGN; Additive white noise; Bit error rate; Decorrelation; Detectors; High power amplifiers; Multiaccess communication; Multiuser detection; Nonlinear distortion; Performance analysis;
Conference_Titel :
Communications, 2002. ICC 2002. IEEE International Conference on
Print_ISBN :
0-7803-7400-2
DOI :
10.1109/ICC.2002.997093
